1 | Make sure that the interrogation from the transceiver is started by setting the relevant sensors from the Sensor List to On gear mode. The Sensor List page is located in the Installation dialog box. Observe the On Gear check box at the right of the list. Check On Gear to enable or disable the relevant sensor from the presentation.
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2 | Make sure that the relevant sensors are off and not deployed. |
3 | Open the TP90 Diagnostics dialog box. This page is located in the Installation dialog box. To open, select it on the Setup menu. Use the transceiver icon of the TP90 block diagram on the I/O Setup group to open the Transceiver page. The Diagnostics button opens the TP90 Diagnostics dialog box.
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4 | On the fist chart, verify that there are no orange markers. The orange marker identifies the pulse the transceiver has determined to be the sensor's reply pulse. The reply pulse is the pulse used to calculate range and bearing to the sensor.
If there are orange markers, it means that the transceiver has detected a false sensor's reply. To solve this, slightly increase the Detection Threshold parameter on the Transceiver page until there are few or no orange markers identified.
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5 | Deploy the sensors into the water. |
6 | On the first chart, verify that there are orange markers. This means that the transceiver has determined the sensors' reply pulses.
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7 | If not all sensors' reply pulses are identified, slightly decrease the Detection Threshold parameter on the Transceiver page. |
8 | If the correct Detection Threshold is difficult to find, revert to the default values and repeat the procedure. Note
Deploying the fishing gear can cause the receiving conditions to change due to the increased acoustic noise caused by other
equipment. These conditions may require you to increase the Detection Threshold value again, even if you had decreased it in step 7. If you find anomalies in the chart, repeat the procedure increasing the Detection Threshold value.
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